<template>
  <div ref="wrapper">
    <div>
      <slot></slot>
    </div>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'

  export const hasTouch = true
  export default {

    name: "Scroll",

    data(){
      return {
        scroll: null,

      }
    },
    props: {
      probeType: {
        type: Number,
        default(){
          return 3
        }
      },
      pullUpLoad: {
        type: Boolean,
        default: false
      }
    },
    methods:{
      scrollTo(x,y,time = 1000){
        this.scroll && this.scroll.scrollTo(x,y,time)
      },
      refresh(){
        this.scroll && this.scroll.refresh()
      },
      finishPullUp(){
        this.scroll && this.scroll.finishPullUp()
      },

      getScrollY(){
        return this.scroll ? this.scroll.y : 0
      }
    },
    mounted() {
      this.scroll = new BScroll(this.$refs.wrapper, {
        click: true,
        probeType: this.probeType,
        pullUpLoad: this.pullUpLoad,
        mouseWheel: true,
        observeDOM: true,
        observeImage: true
        // disableMouse: false,
        // disableTouch: false
      })
      //监听滚动位置
      if (this.probeType === 2 || this.probeType === 3) {
        this.scroll.on('scroll', (position) => {
          this.$emit('scroll', position)
        })
      }
      //监听滚动到底部
      if (this.pullUpLoad) {
        this.scroll.on('pullingUp', () => {
          console.log("滚动到底部");
          this.$emit('pullingUp')
        })
      }
    }
  }


</script>

<style scoped>

</style>
